K-9 Mail

Mozilla Thunderbird

In-app purchases

About this app

K-9 Mail is an open source email client that works with basically every email provider.

Features

* supports multiple accounts
* Unified Inbox
* privacy-friendly (no tracking whatsoever, only connects to your email provider)
* automatic background synchronization or push notifications
* local and server-side search
* OpenPGP email encryption (PGP/MIME)

Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.


Support

If you're having trouble with K-9 Mail, ask for help in our support forum at https://forum.k9mail.app


Want to help?

K-9 Mail is a community developed project. If you're interested in helping to improve the app, please join us! You can find our bug tracker, source code, and wiki at https://github.com/thunderbird/thunderbird-android
We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.

Ratings and reviews

(Jan 2025) Checking these reviews, I will not update the app at this time because I don't want to mess it up! So often updates wreck a perfectly good app. UPDATE#2 I had to redo my email credentials because it stopped receiving emails. It seems fine now. I use this for only Startmail. I am avoiding updating the app itself, I don't know why it loses the credentials, it goes a very long time without a glitch so maybe the issue is on Startmail's end, but I am happy it works now.